dockerfiles: use JSON arguments to make linter happy

Signed-off-by: Shengqi Chen <harry-chen@outlook.com>

dockerfiles/freighter/Dockerfile

@@ -3,4 +3,4 @@ LABEL maintainer="Aron Xu <happyaron.xu@gmail.com>"
 
 RUN cargo install --git https://github.com/open-rust-initiative/freighter
 
-CMD /bin/bash
+CMD ["/bin/bash"]

dockerfiles/ftpsync/Dockerfile

@@ -8,5 +8,5 @@ RUN apt-get update && \
 RUN git clone https://ftp-master.debian.org/git/archvsync.git/ /ftpsync/
 WORKDIR /ftpsync/
 ENV PATH /ftpsync/bin:${PATH}
-CMD /bin/bash
+CMD ["/bin/bash"]
 

dockerfiles/nix-channels/Dockerfile

@@ -17,4 +17,4 @@ RUN mkdir -p /tmp/nix.unpack && \
     rm -rf /tmp/nix.unpack
 
 ENV HOME=/tmp
-CMD /bin/bash
+CMD ["/bin/bash"]

dockerfiles/pub-mirror/Dockerfile

@@ -50,4 +50,4 @@ ENV PUB_CACHE /pub-cache
 
 RUN pub global activate -s git https://github.com/tuna/pub-mirror.git
 
-CMD /bin/bash
+CMD ["/bin/bash"]

dockerfiles/rustup-mirror/Dockerfile

@@ -2,4 +2,4 @@ FROM rust:trixie
 LABEL maintainer="Jiajie Chen <jiegec@noc.ac.cn>"
 
 RUN cargo install rustup-mirror
-CMD /bin/bash
+CMD ["/bin/bash"]

dockerfiles/shadowmire/Dockerfile

@@ -7,4 +7,4 @@ WORKDIR /home/scripts
 RUN apk add --update --no-cache --virtual .build-deps bash
 RUN pip3 install requests tqdm click
 COPY shadowmire.py .
-CMD /bin/bash
+CMD ["/bin/bash"]

dockerfiles/tsumugu/Dockerfile

@@ -2,4 +2,4 @@ FROM rust:trixie
 LABEL maintainer="Shengqi Chen <i@harrychen.xyz>"
 
 RUN cargo install tsumugu
-CMD /bin/bash
+CMD ["/bin/bash"]